GS1503B Gennum Corporation, GS1503B Datasheet - Page 28

• Manufacturer Part Number: GS1503B
• Description: Hd Embedded Audio Codec
• Manufacturer: Gennum Corporation

4.6 Audio Data Processing
4.6.1 Digital Audio Input Format
Table 4-17: Register Settings
Name
AM_SEL
AM[1:0]
WCINA/WCINB
(AES/EBU)
MODE0
MODE1
MODE2
23
MSB
0
Preamble
Sync
Description
0: External pin setting
1: Register setting
Audio input format selection (AM[1] is MSB)
3 4
LSB
0
The GS1503B will accept two audio input formats, AES/EBU digital audio input and
serial input, as listed in
two modes. See
•
•
The audio input format is configured using the AM[1:0] external pins or via AM[1:0]
bits 1-0 in Host Interface register 010h. To configure the audio input format via the
Host Interface, AM_SEL bit 7 in Host Interface register 010h must be set HIGH.
The GS1503B will default to the AM[1:0] external pin setting.
Table 4-16: Audio Input Formats
Figure 4-11: Audio Input Formats
Proprietary and Confidential
AM[1:0]
24-bit Audio Sample Word
24-bit Left Justified; MSB first
24-bit Right Justified; MSB last
Channel 1
0
1
2
Channel Status Bit
User Data Bit
Validity Bit
Parity Bit
Audio Input Format
Serial audio input: 24-bit Left Justified; MSB first
Serial audio input: 24-bit Right Justified; MSB last
AES/EBU audio input
Figure
0
2728293031
Table
4-11.
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37953 - 0
23
4-16. Serial input can be formatted in the following
23
MSB
0
Address
Preamble
Sync
010
010
3 4
August 2006
LSB
0
Bit
1-0
7
24-bit Audio Sample Word
Channel 2
GS1503B Data Sheet
Setting
Table 4-11
See
1
0
Default
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0
0
23